LI-COR LI7200RS, Инструкция по эксплуатации

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Section 5. Maintenance
3 Separate the optical path from the inlet/outlet assembly, being careflu not to strain the tubing
that connects the two.
4
Remove the small thermocouple circuit boards.
The entire assembly, including the circuit board, is replaced as a unit ( Figure 5-6
below). There are two pins on the underside of the circuit board. Lift up on the end
of the board to remove the thermocouple assembly and discard (
Figure 5-6 below).
Make sure the two O-rings are present on the new board (one is tacked onto the
thermocouple board; the other sits between the board and the opening), and insert
the new assembly, making sure the two pins are inserted into the connector. Reas-
semble the optical bench.
Figure 5-6. Remove the old thermocouple assembly. The replacement is part number 9972-
007. An O-ring goes on each side of the thermocouple assembly. One is tacked to the board.
The other is loose; it goes on the opposite side of the board as the glued one.
5 Reassemble the analyzer and perform a leak test (see Leak Test on the facing page) to ensure that
the o-rings are seated properly.
5-10 LI-7200RS Enclosed CO₂/H₂O Analyzer